Which of the following statements is/are true about the Iron Age? 1. The establishment of large cities took place on the basis of a sizeable agricultural surplus. 2. The ceramic culture associated with this age in northern India was Painted Grey Ware (PGW). 3. The Indus Valley Civilization flourished during the Iron Age. Select the correct answer using the code given below:

Options:

• A: 1 and 3 only
• B: 1 and 2 only
• C: 2 and 3 only
• D: 1, 2 and 3

Related Practice Questions:

• Let $S_1$ and $S_2$ be two disjoint, non-empty convex sets in $\mathbb{R}^n$. Under which of the following conditions is there guaranteed to exist a hyperplane that strictly separates $S_1$ and $S_2$?
• Let the primal linear programming problem be: Maximize $Z = c^T x$ subject to $Ax \le b, x \ge 0$. If this primal problem has an unbounded optimal objective value, then which of the following statements is always true regarding its dual problem?
• Let $S = \{(x, y) \in \mathbb{R}^2 \mid x^2 + y^2 \le 9\}$ be a convex set in $\mathbb{R}^2$. The set of all extreme points of $S$ is given by:
• In a linear programming problem with $3$ independent equality constraints and $5$ variables (including slack/surplus variables), what is the maximum possible number of basic solutions?